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Concept

Force between magnets

Related publications (28)

Magnetic Core Shell Nanoparticles Trapping in a Microdevice Generating High Magnetic Gradient

Hubert Girault, Anne-Laure Gassner

Magnetic core shell nanoparticles (MCSNPs) 30 nm diameter with a magnetic weight of 10% are usually much too small to be trapped in microfluidic systems using classical external magnets. Here, a simple microchip for efficient MCSNPs trapping and release is ...

Royal Society of Chemistry2011

Direct Observation of Impurity-Induced Magnetism in a Spin-1/2 Antiferromagnetic Heisenberg Two-Leg Spin Ladder

Siyuan Wang, Joël Mesot, Shuang Wang

Nuclear magnetic resonance and magnetization measurements were used to probe the magnetic features of single-crystalline Bi(Cu1-xZnx)(2)PO6 with 0 < x < 0.05 at temperatures between 2.6 K and 300 K. The simple line shape of the P-31 NMR signals of the pris ...

American Physical Society2010

Magnetic forces produced by rectangular permanent magnets in static microsystems

Hubert Girault, Joël Stéphane Rossier, Anne-Laure Gassner, Mélanie Abonnenc

Finite element numerical simulations were carried out in 2D geometries to map the magnetic field and force distribution produced by rectangular permanent magnets as a function of their size and position with respect to a microchannel. A single magnet, two ...

2009

Growth and magnetism of 2D bimetallic nanostructures

This thesis addresses the growth and magnetic characterization of 2D bimetallic nanostructures deposited by atomic beam epitaxy (ABE) on Pt(111). These structures possess both tunable high perpendicular magnetic anisotropy (PMA) and magnetic moment. These ...

EPFL2008

Magnetism in disordered graphene and irradiated graphite

Oleg Yazyev

The magnetic properties of disordered graphene and irradiated graphite are systematically studied using a combination of mean-field Hubbard model and first-principles calculations. By considering large-scale disordered models of graphene, I conclude that o ...

2008

Uniform and staggered magnetizations induced by Dzyaloshinskii-Moriya interactions in isolated and coupled spin-1∕2dimers in a magnetic field

Frédéric Mila

We investigate the interplay of Dzyaloshinskii-Moriya interactions and an external field in spin-1∕2 dimers. For isolated dimers and at low field, we derive simple expressions for the staggered and uniform magnetizations which show that the orientation of ...

2007

Ising Phases of Heisenberg Ladders in a Magnetic Field

Frédéric Mila

We show that Dzyaloshinskii-Moriya (DM) interactions can substantially modify the phase diagram of spin-1/2 Heisenberg ladders in a magnetic field provided they compete with exchange. For nonfrustrated ladders, they induce a local magnetization along the D ...

2007

An analytical determination of eddy-current losses in a configuration with a rotating permanent magnet

Yves Perriard, Miroslav Markovic

The paper presents a completely analytical method for determining the eddy currents in a cylindrical configuration. The configuration consists of a cylindrical permanent magnet rotating inside a conducting hollow cylinder (stator). The solution is obtained ...

Institute of Electrical and Electronics Engineers2007